I actually know a lot of parents who CIO, and I don't think this is quite fair. I'm sure some of them feel like that, but a lot of others are genuinely afraid that their children will never learn to go to sleep if they don't. And rightfully so! Almost ever mainstream parenting magazine or book promotes this theory! Or, they're afraid that their children are going to be brain-damaged or develop ADD or something if they don't get enough sleep.
I can think of several friends/relatives who used CIO. A couple of them were very outspoken about how they used it for selfish reasons...but the banter was a certain level of crass that made you wonder if it was all bravado.
Then I know a couple friends who used CIO w/ their first and didn't get the confidence to tell of their family, friends and doctors until the second child.
The amount of misinformation out there is staggering. And I'm learning that most people are raised to believe that you get information handed to you by an authority figure. Heaven forbid you go to google.com or the library and figure it out. Doctors know best!